Nikolaj Coster-Waldau, who plays the role of Jaime Lannister on Game of Thrones, recently appeared on ABC News’ Popcorn With Peter Travers and talked about the ongoing season, the time when he pranked the showrunners David Benioff & Dan Weiss and what is it like to play Jaime Lannister with one hand.

About the prank:

“I had longer hair earlier on in the show, and there was constantly talk about, ‘Should we cut it? Shouldn’t we cut it? What’s going to happen with the hair? So I wrote [creators and writers Dan Weiss and David Benioff] this long letter where I pretended [to be] like a diva, saying, ‘Listen guys, I just feel as an artist I’m being left out. And I need my own integrity. I have to take control of my character. Because Jaime is a soldier, I want him to have a buzz cut, so I’m going to go ahead and do that. And I hope you respect me as an artist that I have to do this. I’ll send you a picture when it’s done. They didn’t call me, but they called everyone else at HBO, to the top brass, and like freaking out completely. They had the hairstylist getting hold of wigs, because you can’t just make a wig in like 24 hours. It was amazing. It was a beautiful moment. I got them. I got them really bad.”

Playing Jaime with one hand:

“In the beginning, it was a pain in the butt. I had to sometimes hide my own arm in the backside and you had the stump in the front, which was the prosthetic. Now you have this gold hand, which is basically a golden metal glove that I put on, so it’s not too bad.”